The Heart: Old and New ViewsLewis, 1921 - 177 pages |
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Common terms and phrases
A-C interval a-v bundle aorta aortic valves apex auricle and ventricle auricle to ventricle auricular contraction auricular fibrillation auricular flutter auricular wave auriculo-ventricular beat beginning blood-pressure body Borelli cardiac carotid cells circulation complete heart block Cordis crimson colour curve deflections described diastole discovery electrocardiogram electrode excitation wave function Galenic galvanometer Gaskell Harvey heart block heart muscle heart-beat Hippocrates Ibid increased instrument irregularity Journ JUGULAR AND RADIAL jugular tracing key diagram lead left ventricle Lewis ligature liver lungs manometer measurement medicine method mitral mitral stenosis Motu muscle fibres muscular nerve normal occur paroxysmal tachycardia passage passed permeability Physiol physiology polygraph pressure pulmonary artery pulmonary veins Q R S Quæstiones RADIAL PULSES radial tracing rhythm right auricle right ventricle s-a node septum sinus theory tion tissues tricuspid tricuspid valve tube vena cava venous pulse venous tracing ventricular complex ventricular contraction ventricular extra systole Vesalius vessels vital spirit
Popular passages
Page 39 - Since all things, both argument and ocular demonstration, show that the blood passes through the lungs and heart by the action of the [auricles and] ventricles, and is sent for distribution to all parts of the body, where it makes its way into the veins and pores of the flesh, and then flows by -the veins from the circumference on every side to the center, from the lesser to the greater veins, and is by them finally discharged into the vena cava and right auricle of the heart...
Page 37 - ... ruptured through the excessive charge of blood, unless the blood should somehow find its way from the arteries into the veins, and so return to the right side of the heart ; I began to think whether there might not be a motion, as it were, in a circle.
Page 30 - This communication, however, does not take place through the septum, partition or midwall of the heart, as commonly believed, but by another admirable contrivance, the blood being transmitted from the pulmonary artery to the pulmonary vein, by a lengthened passage through the lungs, in the course of which it is elaborated and becomes of a crimson colour.
Page 37 - A MOTION AS IT WERE, IN A CIRCLE. Now this I afterwards found to be true; and I finally saw that the blood, forced by the action of the left ventricle into the arteries, was distributed to the body at large, and its several parts, in the same manner as it is sent through the lungs, impelled by the right ventricle into the pulmonary artery, and that it then passed through the veins and along the vena cava, and so round to the left ventricle in the manner already indicated. Which motion we may be allowed...
Page 51 - ... and contraction occurred, by reason of the rapidity of the motion, which in many animals is accomplished in the twinkling of an eye, coming and going like a flash of lightning; so that the systole presented itself to me now from this point, now from that; the diastole the same; and then everything was reversed, the motions occurring, as it seemed, variously and confusedly together.
Page 40 - ... of the flesh, and then flows by the veins from the circumference on every side to the centre, from the lesser to the greater veins, and is by them finally discharged into the vena cava and right auricle of the heart, and this in such a quantity or in such a flux and reflux thither by the arteries, hither by the veins, as cannot possibly be supplied by the ingesta, and is much greater than can be required for mere purposes of nutrition ; it is absolutely necessary to conclude that the blood in...
Page 51 - When I first gave my mind to vivisections, as a means of discovering the motions and uses of the heart, and sought to discover these from actual inspection, and not from the writings of others, I found the task so truly arduous, so full of difficulties, that I was almost tempted to think, with Fracastorius, that the motion of the heart was only to be comprehended by God.
Page 35 - It is plain from the structure of the heart that the blood is passed continuously through the lungs to the aorta as by the two clacks [-or valves] of a water bellows to raise water.
Page 30 - ... colour. Mingled with the inspired air in this passage, and freed from fuliginous vapours by the act of expiration, the mixture being now complete in every respect, and the blood become fit dwelling-place of the vital spirit, it is finally attracted by the diastole, and reaches the left ventricle of the heart.
Page 48 - ... sometimes one inch: when it was at its full height, it would rise and fall at and after each pulse two, three, or four inches; and sometimes it would fall twelve or fourteen inches, and have there for a time the same vibrations up and down at and after each pulse, as it had, when it was at its full height; to which it would rise again, after forty or fifty pulses.